If you havent figred it out for yourself already,
its best to take some sort of metal and flatten it
to put between the fttings and the fiberglass
i think its actually best to get a large Coffe can,
then flatten the can so you got a double walled heat sheild..
also a piece of drywall will work pretty well as a heat shield
if you got the room for it.
Its also not a bad idea to keep a large spray bottle Windex near by...
Windex makes a great fire extinguisher in time of need.